Feed mechanism for calender-rolls of paper-making machines.



PATENTED JAN. 1, 1907. R. SMITH. FEED MECHANISM FOR GALBNDBR ROLLS OFPAPER MAKING MACHINES.

APPLIOATIOI FILED KAY 9, 1906.

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No. 839,966. PATENTEDJAN. 1, 1907.

R. SMITH. FEED MECHANISM FOR OALBNDER ROLLS OF PAPER MAKING MACHINES.

APPLICATION FILED MAY 9, 1906.

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PATENTED JAN. 1, 1907. R. SMITH.

FEED MECHANISM FOR (IA LENDER ROLLS OF PAPER MAKING MACHINES.

APPLICATION FILED MAYQ, 1906.

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No. 839,966. PATENTED JAN. 1, 1907.

R. SMITH.

FEED MECHANISM FOR CIA-LENDER ROLLS OF PAPER APPLICATION FILED MAY 9,190B,

MAKING man-mas.

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PATENTED JAN. 1907.

MITH. FEED MECHANISM FOR CALENDER ROLLS OF PAPER MAKING MACHINES.

APPLICATION TILED MAY 9, 1906.

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UNITED STATES PATENT OFFIOE.

RICHARD SMITH, OF BELLOWS FALLS, VERMONT, ASSIGNOR TO SMITH PAPERMACHINERY COMPANY, OF PORTLAND, MAINE.

FEED MECHANISM FOR CALENDER-ROLLS 0F PAPER-MAKING MACHINES.

Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed May 9, 1906. Serial No. 315,864-

To aZZ whom it may concern:

Be it known that I, RICHARD SMITH, a citizen of the Dominion of Canada,residing at Bellows Falls, in the county of Windham and State ofVermont, have invented an Improvement in Feed Mechanism for Calender-Rolls of Paper-Making Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likecharacters on the drawings representing like parts.

This invention relates to a feed mechanism for calender-rolls ofpaper-making machines, and is an improvement upon the feed mechanismshown and described in United- States Patent No. 743,403, granted to meNovember 3, 1903.

The present invention has for one of its objects to provide a feedmechanism in which the doctor-blade may be maintained in constantengagement with its cooperating cylinder or roll and separation of theroll from its doctor-blade by sudden jumping or movement of the rollavoided, as will be described.

Another feature ofthe invention consists in a novel means for supportingthe doctors, so that any cylinder or roll of the stack of rolls may beremoved without removing the doctor cooperating with it.

The invention further consists in novel means, as will be described, foradjusting the doctor with relation to its cooperating cylinder or roll.

Other features of this invention will be pointed out in the claims atthe end of this specification.

Figure 1 is an end elevation of a sufiicient portion of a calender-stackprovided with a feed mechanism embodying this invention to enable it tobe understood; Fig. 2, details in end elevation, on an enlarged scale,of the doctors for the bottom and second rolls of the stack shown inFig. 1; Fig. 3, a detail to be referred to; Fig. 4, a detail in sideelevation of the doctors shown in Fig. 2; Fig. 5, a detail in endelevation of the doctor for the intermediate rolls Fig. 6, a sideelevation of the doctor shown in Fig. 5; and Figs. 7, 8, and 9, detailsto be referred to.

In the present instance the invention is shown as embodied in acalender-machine comprising a stack or series of four cylinders or rollsa b c d, mounted in a framework, only one side 6 of which is shown.

The rolls a b c d have cooperating with them doctors f g h i, which aresupported in a manner as will be described. To this end each side frame6 has secured to it a support for the doctors f g and separate supportsfor the doctors h i. The support for each end of the doctors f 9consists of a cheek-piece or bar j, secured to the side frame 6 byscrews 16 and separated therefrom by thimbles Z. The bar j is providedon its front face with a T- slot m for the reception of the heads ofbolts n, by which the supporting-plate 0 for the doctor f is adjustablyfastened to the cheekpiece or bar y'. The doctor f, the bearingplate 19therefor having the slotted flange secured to the plate 0 by screws 1",and the tension bolt 8, provided With the set-screw u, which cooperateswith the lug v on the said doctor, are and may be the same as shown anddescribed in the patent referred to.

The doctor 9 for the second roll I) is journaled at each end in a videdwith concentric slots 16, through which extend bolts 17, whichadjustably secure the said bearing-plate to a bracket or arm 18, mountedon a i'ulcrumed bolt 19, secured to a supporting-p ate 20, which isadjustably secured to the cheek-piece or bar j by the bolts 21, havingtheir heads located in the T-slot m. (See Figs. 2 and 4.) Thesupporting-plate 20 is provided with slots 22, which extendsubstantially at right angles to the slot m in the cheek-piece or bar Itwill thus be observed that the supportingplate 20 is capable of beingmoved both longitudinally and transversely of its supporting-bar orcheek-piece, thereby facilitating adjustment of the doctor g withrelation to the roll I), with which it cooperates. It will also beobserved that the doctor g is free to move in the arc of a circle withthe fulcrumbolt 19 as a center.

The doctor 9 is held in engagement with the roll I) With a yieldingpressure, which is obtained as Will now be described. For this purposethe bracket or arm 18 is engaged by a set-screw 25, (see Figs. 2 and 4,)extended through an arm 26 on a bolt 27 and locked in its adjustedposition by the nut 28. The bolt 27 is extended through a bearing hub orbox 29 and is acted upon by a coiled bearing-plate 15, prospring withinsaid box to keep the blade 31 of the doctor gin engagementwith the roll,I). The movement of the bolt 27 by its spring 30 is limited by the head32 on said bolt. The hub or box 29 is attached to a supporting-plate 34,which is mounted to slide on a cheek-piece or bar' 35, attachedto' theside frame e, and said plate is secured. 1n its adjusted position by theset-screw 36. The adjustability of the spring-box 39 on the cheek-pieceenables the spring-bolt to be accurately positioned with relation to thedoctor.

The doctors h i for the intermediate rolls 0 d are supported in a novelmanner, as will be described, and inasmuch as the supports for thesaiddoctors are alike a detailed description of one will suflice. Referringto Figs. 5. and 6, the doctor 'L consists of a plate 49, secured toa bar41, which is fastened to the metal pieces 42 43, riveted or otherwisefastened to thetube or body portion 44 of the doctor 7 which bodyportion is provided with flattened journals 46. Each journal 46issupported in a journal-box 47, which is mounted to slide on a horizontalflange 48 of a suportingplate 49, which latter is ver tical y arrangedand is dovetailed onto the cheek-piece or bar to permit of verticaladjustment of said plate and which is secured in its adjusted position,as will be described. The journal-box 47 is adjustably mounted on theflange 48 to permit of lateral adjustment of the doctor t toward andfrom the roll d, and for this purpose the journal-box 47 is provided onits bottom with a depending square lug 490, which extends into alongitudinal slot in the flange 48 and is retained therein by a bolt orscrew 50, extended into a socket in the bottom of the lug 490, the saidscrew having on it a washer 51, which engages the under side of theflange 48 and serves to prevent the journal-bearing from lifting .andtilting sidewise. The doctorblade is held in yielding engagement withthe roll d by a spring 53, located in a box 54, attached to thejournalbearing, said spring acting on the head of the bolt 56, which isprovided at its opposite end with the arm 57, carrying the sets'crew 58and lock-nut 59, said set-screw engaging a lug 60, attached to the bodyor tube 44 of the doctor "L. The adjustment of the doctor i laterallywith relation to the roll at may be effected, as herein shown, by alever 61, pivotally mounted on the fulcrum-bolt 62, secured to thesupporting-plate 49 and provided with a slot 63, through which extends apin 64, projecting from the bearing-plate 47. By reference to Fig. 5itwill be seen that movement of the lever 61 on its pivot effectsmovement of the bearing-plate 47 and the doctor 'L, supported thereby,laterally with relation to the roll d. Provision is made for lockingthe'lever 61 against accidental movement, and for this purpose a latchplate or bar 66 is secured to the side of the supporting-plate 49 by thescrews 67, extended through slots 68 in the latch plate and which permitof vertical adjustment of said latch-plate. The latchplate 66 isprovided with a hook or latch70, (see Fig. 6,) with the under side ofwhich a handle-bar 71 for the lever 61 is adapted to be engaged, asrepresented in Fig. 5, to prevent upward movement of said handle untilthe latter is disengaged from its latch, which is effected by moving thehandle 71 laterally with relation to the latch 70. To permit lateralmovement of the handle 71, the latter is mounted on a pivot-pin 72,carried by the forked end of the lever 61. (See Fig. 5.) The forked endof the lever 61 is provided with a lug 73, with which cooperates a pinor locking-dog 74, carried by the handle and acted upon by a spring 75,the lug 73 co6perating with the pin 74 to render the handle practicallyrigid on the lever 61 when it is desired to turn said lever on itspivot. When it is desired tov clean the doctor 'i, the handle isdepressed sufliciently to clear the latch 70, after which it is turnedon its pivot 72 until it is disengaged therefrom, and when clear of thelatch the handle is elevated, so as to turn the lever 61 on its pivotand move the bearing-plate 47 and its doctor away from the roll d.Provision is also made for maintaining the doctor-plate 40 in constantcontact with its roll (1, and for this purpose the supporting-plate 49is dovetailed onto the cheek-piece or bar 35 and has secured to it,as'by the screws 80, one end of a horizontal arm 81, the other end ofsaid arm resting on a stud or pin 82 on a gib 83,which is attached, asby screws 84, to the journal-box of the roll d, as represented in Fig.5.

By inspection of Fig. 5 it will be seen that the supporting-plate 49 forthe doctor t is connected with and supported by the journalbox of theroll (1. Consequently the doctori has a fixed relation to the roll d andmoves vertically with it. In this manner separation of the intermediaterolls 0 d from their cooperating doctors h t by sudden jumping of therolls when the paper is first passed be tween the said rolls is avoided.

The plate 34 of the spring-box 29 on the cheek-piece 35 serves as asupport for the supporting-plate 49 for the doctor i (see Fig. 1) incase it should be desired to remove the arm 81, and doctor It may besimilarly supported by a piece 86, (see Fig. 1,) secured to thecheekpiece 87 on the other side of the rolls.

In Figs. 7, 8, and 9 the construction of the bearing-plate shown indetail, wherein it'will be seen that the spring-bolt is capable of beingrevolved around its center, which enables the setscrew 58 to'be swungclear of the lug on the doctor, which is then free to be removed thesupporting-plate 49 for theand its attached spring-box is- IIO from itsbearings, which latter are open at their top, as herein shown.

Each of the intermediate doctors has secured to it hinge-pieces 90, towhich is pivoted by the pins fastened to it steel pieces or fingers 93for guiding the paper into the nip between the rolls 0 d. The bar 92 andfingers 93 are held in position by the balance-weight 94, secured to thesaid bar.

From the above description it will be seen that the doctor-blades forthe rolls, and especially for the intermediate rolls, are kept inconstant contactwith the said rolls, and the use of heavy springsheretofore employed to accomplish this resultis avoided. It willalso beseen that the doctors are not attached to the j ournal-boxes of therolls. Consequently the rolls can be removed, if desired, withoutremoving the doctors from the machine.

. So, also, the doctors cooperating with the intermediate rolls 'can bequickly and easily moved away from the same for purpose of cleansing orrepairing the same, and this movement can be effected in a minimum timeby means of the lever arrangement above described.

I claim 1.. In combination, a calender-roll, a doctor cooperatingtherewith and provided with journals, bearings in which said journalsare mounted slidable toward and from said roll substantially at rightangles thereto, supports on which said journal-bearings rest and slide,and means carried by said bearings and cooperating with said doctor forturning said journals in their bearings, and means for moving saidbearings on their supports, substantially as described.

2. In combination, a calender-roll, a doctor cooperating therewith andprovided with journals, slidable bearings in which said journals aremounted, supports on which said j ournal-bearings slide, means carriedby said bearings and cooperating with said doctor for turning saidjournals in their bearings, and levers connected with said journal-beanings for sliding them on their supports.

3. In combination, a calender-roll, a doctor cooperating therewith, anda support for the doctor connected with the said'roll to move therewithand iaintain said doctor in contact with said roll, substantially asdescribed.

4. In combination, a calender-roll, a doctor cooperating therewith, andmeans to conne'ot said doctorwith said roll to move therewith and topermit movement of the doctor with relation to said roll, substantiallyas described.

5. In combination, a doctor, bearings in which said doctor is journaled,supports for said bearings provided with flanges having slots, and meanson said bearings extended into the said slots to secure said bearings inor bolts 91 a bar 92, having sliding engagement with said flanges, substantially as described.

6. In combination, a doctor, bearings in which said doctor is journaled,supports for said bearings provided with flanges having slots, meansdepending from said bearings in said slots to secure said bearings insliding engagement with said flanges, levers pivoted to said supports,and means to connect said levers with said bearings to effect a slidingmovement of said bearings by rotary movement of said levers,substantially as described.

7. In combination, a doctor, bearings in which said doctor is journaled,supports for said bearings provided with flanges, means to secure saidbearings in sliding engagement with said flanges, levers pivoted to saidsupports, means to connect said levers with said bearings, handlespivoted to said lever to move in-a direction substantially at rightangles to the direction in which the levers are moved, and latchescooperating with said handles, substantially as described.

8.- In combination, a calender-roll mounted in journal-boxes, a doctorcooperating with said roll, journal-bearings for said doctor, andsupports for said journal-bearings suspended from said journal-boxes,substantially as described.

9. In combination, a calender-roll, a doctor cooperating therewith, anda guide for the paper pivotally supported from said doctor, and a weightattached to said guide, substantially as described.

10. In combination, a calender-roll, a doctor cooperating therewith,pivoted arms to which said doctor is adjustably secured, and yieldingmeans cooperating with said arms to hold the doctor in engagement withits roll, substantially as described.

11. In combination, a plurality of vertically-arranged calender-rolls, aframework in which said rolls are supported, doctors cooperating withsaid rolls, vertical cheek-pieces or bars secured to said framework outof line with each other, plates adjustably secured to the lower of saidcheek-pieces, arms pivoted to said plates, means to secure one of saiddoctors to said arms, spring-boxes secured to the other of saidcheek-pieces, and spring-actuated devices carried by said spring-boxesand engaging said pivoted arms, substantially as described.

12. In combination, a calender-roll, a doctor cooperating therewith,journal-boxes for said doctor slidable toward and from said roll,supports having substantially horizontal flanges upon which saidjournal-boxes rest, and means to slide said boxes on said flanges,substantially as described.

13. In combination, a calender-roll, a doctor cooperating therewith,journal-boxes for said doctor slidable toward and from said roll,supports having substantially horizontal flanges upon which saidjournal-boxes rest, and slotted levers connected with said journal-boxesto slide t 1e same ontheir support- I thereto, and

ingflanges, substantially as described. j

14. I combination, a calender-roll, adoctor cooperating therewith,journal boxes for said doctor open at their upper ends and slid? abletoward and from saidroll, supports for said; boxes having substantiallyhorizontal flanges, and mean's'for sliding'said boxes on theirsupporting-flanges, substantially as described.

.15. In combination, a calender-roll, a doc tor cooperating therewithand provided with lugs orprojections, -journal-boxes for said doctor,-spring-ac'tuated devices carried \by said journal-boxes and engagingthe'lugs or projections on said doctor in their boxes, and means to movesaid oui nal-boxes on their supports, substantially as described.

16. Incombination, a calender-roll, a'i 'doctor cooperating therewithand provided with journals, boxes in which said journals are to turn thesame mounted to turn therein, slidable toward and fromsaid roll,substantiallyat rightangles a lug on saiddoctor, A device carriedby ajournal-box and cooper atingwith saidlug to means to turn said doctorand its journals without moving said boxes, substantially asdescribedJ I1 17, In combination, a calender-roll, a doctor cooperating therewithand provided with journals, boxes in which s'aid journals are mounted toturn, slidable toward and from said roll, supports on which said boxesslide, and a spring-actuated journal-boxes. I 1 Y j '18, In combination,acalendr-roll, a doc- 'tpr cooperating therewith, and a support for thedoctor connected'withsaidroll to move therewith yet capable of beingbod'ily' moved turn the doctor in its with relation to s'aidroll,substantiallyas' de-

